MAMEWorld Forums - Hardware - Re: Stumped by rebooting Shuttle XPC

Open it up, check the caps on the motherboard near the processor. Then do the same to the power supply. Betting you will find some swelling.

*edit*
just looked at the model, yeah, going to be power supply (caps/fan) and MB caps. Get out your soldering iron and you patience, cause those power supplies are a biatch to work on.

or spend the 60$ and get a new one...

http://www.cputopia.com/psu-replace-300-...CFaY-MgodFXEA-w

> I have a Shuttle XPC (SA76G2) with an Athlon II X2 250 that I built (for my mom) in
> 2009. It worked great for several years, but it's suddenly started rebooting randomly
> on her.
>
> It seems to happen when the CPU and/or GPU are stressed. It'll idle happily for
> hours, but even just loading up a Flash game or video will cause it to abend in 5-10
> minutes.
>
> It's *not* a bluescreen. I've disabled auto-restart, and it still just reboots
> without warning. Event Viewer shows nothing in the logs, other than a note that the
> previous shutdown was abnormal. When this happens, startup always fails just after
> POST with a keyboard error. Simply resetting the machine again will boot normally
> every time.
>
> The first thing I did was replace a wireless keyboard with a basic, wired keyboard.
> When that didn't change anything, I also tried a known good wired keyboard. Still no
> change, so the keyboard error doesn't seem to be legit. The keyboards are all USB,
> which rules out a bad port or anything like that.
>
> Windows 7 and drivers are all up to date as far as I can see. She's got up-to-date
> virus protection, and the machine is generally very clean, so a virus seems unlikely.
> I flashed the BIOS to one several revisions newer - no change. Running Memtest86 now,
> but it's already made it through one pass without errors, so I suspect it's not going
> to uncover anything.
>
> I'm kind of running out of tests to run, and I hate to start replacing parts at
> semi-random. Where it seems to be a true hard reset, I'm guessing maybe the PSU or
> something power-related in the motherboard? Anyone seen anything similar? I can't say
> I've ever seen a true hard reset in a modern PC before, it's almost always an
> auto-restart from a bluescreen.

Edited by italie (09/10/13 03:44 AM)